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[mantagte]

if you pressure wash your engine/engine bay like i did the other day
please run your car up to temperature to dry out
otherwise they miss like buggery for ages 

[cem_devecioglu]

 :-/

[Dishevelled Den]

The voice of experience speaks many truths 8-) 8-)

[Banjax]

I always thought you should never pressure wash an engine  :-?

[Mr Skrunts]

prespraying with TFR can make the job a lot easier as well.

Be very carefull not to spray toooooo much water on any electrical sockets/plugs or the fuse box section above the battery.  Allthough these fittings are water proof they are not designed to have high pressure water blasted at them.

Also consider where you jet wash your engine, if the councel find out from a nosey neighber and the is evidence of oil washed down the drain you counls be in trouble.

[Del Boy]

I always thought you should never pressure wash an engine  :-?

You can it's safe and I've done it many times. You shouldn't have a problem, just as long as you are careful and not to excessive 

[tunnie]

never seen the appeal to blast engine bays with high pressure water myself, i prefer to use cleaning agent on a bit of old rag!

[BigAl]

never seen the appeal to blast engine bays with high pressure water myself, i prefer to use cleaning agent on a bit of old rag!

Not surprised - no one expects you to splash out on a pressure washer

[Mr Skrunts]

never seen the appeal to blast engine bays with high pressure water myself, i prefer to use cleaning agent on a bit of old rag!

Or prespray it on and rub it in with a cloth or paint brush then a quick jet wash off.

[tunnie]

never seen the appeal to blast engine bays with high pressure water myself, i prefer to use cleaning agent on a bit of old rag!

Not surprised - no one expects you to splash out on a pressure washer

Got Karcher one in garage 

Use it for washing outside of the car, patio, garage doors ect, but its never appealed to me to open the bonnet which is full of electrics to stick a pressure washer jet in there.

I understand that they can take it, and never hold it on place long enough, but a bit of old cloth works just as well! Just requires a little effort

[Kevin Wood]

Mate of mine missed out on a driving holiday by jetwashing his engine the day before. The electrics don't always cope with it.

Kevin

[Chris_H]

Pressure washers need to be used with extreme care in my view.

It's not just electrics, it's all manner of seals that are only designed for atmospheric pressure like wheel bearings, cam-cover gaskets, windscreen surrounds, panel joins... the list is endless.

Put simply, you can get water into places that it can't escape from.

On block paving you can undermine the sand base and cause subsidence, even if the joins are sealed the super-clean surface is vulnerable to mosses and lichens if you don't apply a sealant afterwards and some protective surfaces get removed leading to accelerated erosion by the elements.

Not as universally useful as the marketing people would have you believe.

[mantagte]

it was the first time that i have pressure washed an engine
and it is most certainly the last as well

[tidla]

if your gona do it stick to the oily bits underneath.

[mantagte]

but the oily bits were all under the bonnet
looked like someone had thrown 5 liters of old and crap oil all over the place